Samsung Display Co., Ltd.

Yerin Oh

Soowon Kim

Jaseung Ku

Il Ho Lee

Seungrok Lee

Suhyun Jeong

Wankee Jun

Jinwoo Park

Taejoon Kim

Hyungchul Kim

Sangkook Kim

Bongil Kang

Hyeonseo Cho

Minhong Kim

Jisu Yeom

A display device is disclosed that includes a display panel displaying an image, a display driving portion configured to drive the display panel, a touch unit disposed on the display panel and including a driving electrode and a sensing electrode, a touch driving portion configured to transmit a touch driving signal to the driving electrode and receive a touch sensing signal from the sensing electrode, and a main processor configured to control the display driving portion and the touch driving portion, in which a driving frequency of the touch driving signal is determined based on an amount of change in touch capacitance due to an external input, with respect to touch capacitance between the driving electrode and the sensing electrode.

Display device, method of determining driving frequency, and method of driving the display device

A display apparatus includes: a substrate having a first display area and a second display area; and a touch driving circuit configured to: receive first sensing signals of first touch sensors on the first display area; receive second sensing signals of second touch sensors on the second display area; generate first touch values based on the first sensing signals; generate second touch values based on the second sensing signals; generate corrected touch values by correcting the second touch values; and determine a touch location based on the first touch values and the corrected touch values.

Method of detecting touch location and display apparatus

An inspection system includes a display device product comprising a display panel and an input sensor; and an inspection device comprising an inspection signal generator configured to provide to the display panel an inspection signal indicative of a first image pattern, a memory configured to store a reference signal responsive to a second image pattern, and a noise detector configured to receive from the input sensor a sensing signal responsive to the first image pattern, detect a first noise based on the sensing signal, and detect a second noise based on the reference signal.

System and method for inspecting display device having input sensor

A driving method of a touch sensing part includes sensing a touch of a user by comparing a capacitance formed by a first sensing electrode and a second sensing electrode crossing the first sensing electrode with a reference value in a reference touch mode, varying the reference value such that the reference value decreases along a decrease in the capacitance, during a first period, when an ambient temperature is lower than a reference temperature, sensing the user's touch by comparing the reference value and the capacitance, with the reference value maintained uniformly, during a second period following the first period, when the touch of the user is made, and varying the reference value such that the reference value decreases, during a third period following the second period.

Touch sensing part and driving method thereof

An electronic device including: a display layer; a sensor layer disposed on the display layer; a memory configured to store first sensitivity values and first differential sensitivity values; and a sensor driver configured to calculate second sensitivity values from a plurality of nodes and to calculate second differential sensitivity values, wherein the sensor driver is configured to: calculate difference values between the first differential sensitivity values and the second differential sensitivity values; calculate a first average value of a first row or column of values among the difference values; and calculate a second average value of remaining values among the difference values, wherein the remaining values were not used in the first average value calculation, and wherein the sensor driver determines whether to update a baseline, based on the first average value and the second average value.

Electronic device, a sensor driving unit, and an electronic device driving method

An electronic device includes: an electronic panel including a first area, a folding area, and a second area, arranged along a first direction, the folding area being folded with respect to a folding axis defined in a second direction crossing the first direction; a support layer under the electronic panel and comprising a folding portion overlapping the folding area and provided with a plurality of holes defined therethrough, a first portion overlapping the first area, and a second portion overlapping the second area; and a folding sensing module comprising a sensing pad being electrically conductive, a driver configured to apply an electrical signal to the sensing pad, and a sensing line connecting the sensing pad and the driver.

Electronic device

A display device includes: a display panel including: a display layer; and a sensor layer on the display layer, and including first, second, and third areas; a first driver electrically connected with the sensor layer through a first pad area; and a second driver electrically connected with the sensor layer through a second pad area. The sensor layer includes: a plurality of electrodes at the first, second, and third areas; a plurality of first intersecting electrodes at the first area, and electrically connected with the first driver; a plurality of second intersecting electrodes at the second area, and electrically connected with the first driver and the second driver; and a plurality of third intersecting electrodes at the third area, and electrically connected with the second driver. Each of the first pad area and the second pad area is spaced from the second area in a first direction.

Display device

An interface device includes an electronic device and an input device for communicating with the electronic device, wherein the electronic device includes a display layer, a sensor layer which is disposed on the display layer and senses a first input by the input device, a display driving unit for generating a vertical synchronization signal for driving the display layer, and a control unit for controlling the sensor layer, wherein the control unit outputs, in synchronization with a first vertical synchronization signal, a first uplink signal to the sensor layer and outputs, in synchronization with a second vertical synchronization signal, a second uplink signal having a phase different from a phase of the first uplink signal to the sensor layer.

Electronic device and interface device having sensor layer capable of operating in two modes

A display device includes a display panel, and an input sensing part disposed on the display panel. The input sensing part includes a first main electrode, a first sub-electrode adjacent to the first main electrode, a second main electrode and insulated from the first main electrode and the first sub-electrode, the second main electrode overlapping the first main electrode and the first sub-electrode, a second sub-electrode adjacent to the second main electrode, and insulated from the first main electrode and the first sub-electrode, the second sub-electrode overlapping the first main electrode and the first sub-electrode, a first group of switches selectively connecting a transmission line and one of the first main electrode and the first sub-electrode with each other, and a second group of switches selectively connecting a receiving line and one of the second main electrode and the second sub-electrode with each other.

Growing community of inventors

Ulsan, South Korea

Yerin Oh